A kind of negative lead paste of lead-carbon battery

A negative electrode paste and lead-carbon battery technology, which is applied in the construction of battery electrodes, lead-acid batteries, lead-acid batteries, etc., can solve the problems of hydrogen suppression effect decline, uneven size, poor consistency, etc., and achieve the increase of hydrogen evolution impedance, increase Utilization rate, the effect of reducing hydrogen evolution

Active Publication Date: 2020-07-24
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since activated carbon is an irregular high-specific surface material, the pores are in the micron or even nanometer scale, and the size is not uniform, so the consistency of the Pb-doped modification effect is poor.
Pb is only attached to the surface of activated carbon, and may agglomerate in some places through dissolution and recrystallization during the long-term battery cycle, reducing the hydrogen suppression effect

Method used

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  • A kind of negative lead paste of lead-carbon battery
  • A kind of negative lead paste of lead-carbon battery
  • A kind of negative lead paste of lead-carbon battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of activated carbon-gallium oxide-indium oxide composite material: use physical vapor deposition to deposit gallium oxide and indium oxide on the surface and pores of activated carbon, and the specific surface area of ​​activated carbon is 1800-2000m 2 / g, the particle size D50 is 10-20m, and the weight ratio of activated carbon: gallium oxide: indium oxide is 24:1:1.

[0058] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 97 parts of lead powder, 2 parts of activated carbon-gallium oxide-indium oxide composite material, 0.2 part of carbon black, 0.5 part of barium sulfate, and 0.1 part of lignin sulfonate Sodium acid, 0.1 part of humic acid and 0.1 part of short fiber, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0059] Two sets of reference negative electrode pastes were prepared.

[0060] The solid raw materials of the first group of negative electrode pastes include 97 parts of lead powd...

Embodiment 2

[0072] Preparation of graphene-zinc oxide composite material: use hydrothermal method to deposit zinc oxide on the surface of graphene, wherein the number of carbon atomic layers of graphene is within 10 layers, and the specific surface area is 300-400m 2 / g, the weight ratio of graphene: zinc oxide is 23:2.

[0073] Preparation of lead carbon negative electrode paste: the solid raw materials of the paste include 99 parts of lead powder, 0.5 parts of graphene-zinc oxide composite material, 0.25 parts of carbon black, 1 part of barium sulfate, and 0.01 part of sodium lignosulfonate , 0.2 parts of humic acid and 0.06 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0074] Apply the above two kinds of lead pastes on the grid to make the negative plate, and the positive plate is assembled, filled with acid and activated according to the normal production process to produce 2V15Ah valve-regulated sealed lead-acid battery.

[0075] Two sets of ref...

Embodiment 3

[0088] Preparation of carbon black-graphite-bismuth oxide composite material: use a chemical water bath method to coat a thin layer of bismuth oxide on the surface of carbon black and graphite, and the specific surface area of ​​carbon black is 1000-1200m 2 / g, particle size D 50 5~10m, the specific surface area of ​​graphite is 8~10m 2 / g, particle size D 50 The thickness of bismuth oxide thin layer is about 100nm. The mass ratio of carbon black, graphite and bismuth oxide in the composite material is 10:9:1.

[0089] Preparation of lead carbon negative lead paste: the solid raw materials of the lead paste include 98 parts of lead powder, 5 parts of carbon black-graphite-bismuth oxide composite material, 0.2 part of barium sulfate, 0.05 part of sodium lignosulfonate, 0.05 part of Humic acid and 0.09 parts of short fibers, the apparent density of the lead paste is 4.0-4.4g / cm 3 .

[0090] Apply the above two kinds of lead pastes on the grid to make the negative plate, and ...

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Abstract

The invention provides a lead-carbon battery negative electrode paste, which comprises the following components in parts by mass: lead powder 1-99%; carbon-oxide composite material 0.1-90%; carbon black 0-0.5%; sulfuric acid Barium 0.1~2; short fiber 0.05~0.1; organic leavening agent 0.01~3.2. The oxides on the surface of the carbon material and in the pores of the lead paste are tightly adsorbed around the carbon material in the form of ions. During the curing and drying process, they are recombined on the surface and pores of the carbon material. "Dissolution-recombination" makes the carbon material more active. The surface and pores are evenly attached with tiny thin oxide layers, which greatly improves the bonding degree of carbon materials and oxides, fully exerts the electrical conductivity and capacitance characteristics of carbon materials, and limits hydrogen evolution on the surface of carbon materials.

Description

technical field [0001] The invention relates to a lead-carbon battery electrode material, in particular to a lead-carbon battery negative lead paste. Background technique [0002] Lead-acid batteries are rich in raw material resources, low in price, good in safety, high in resource regeneration and recovery rate, and mature in technology. Traditional lead-acid batteries operate under high-rate partial state-of-charge (HRPSoC) conditions (about 30% to 70% SoC), which can easily lead to severe sulfation of the negative plate and lead to battery failure. Lead-carbon super battery is a new composite energy storage device composed of lead-acid battery and super capacitor. Compared with traditional lead-acid battery, it can effectively inhibit the sulfation of the negative plate and prolong the service life by 3-5 times. Power density increased by 20%-50%. [0003] At present, capacitive carbon materials such as carbon black and activated carbon with high specific surface area a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/57H01M4/62H01M10/12
CPCH01M4/57H01M4/625H01M4/628H01M10/121Y02E60/10Y02P70/50
Inventor 刘皓胡晨相佳媛杨凯高飞赵录兴李大贺王丽娜马晓明丁平陈建吴贤章
Owner CHINA ELECTRIC POWER RES INST
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